Pump.



J. V. CHAPMAN.

PUMP.

APPLIOATION FILED MAY 15, 1911.

Patented Apr. 16

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cnLUMBlA PLANDGRAPH co., WASHINDTON, D. c.

Il-llllllll i J. V. CHAPMAN.

PUMP.

APPLIUATION FILED M115, 1911.

1,023,298. Patented Apr.16, 1912.

2 SHEETS-SHEET 2.

coLuMBIA PLANDGRAPH Co., WASHINGTON. D. C.

UNITED STATES JOHN VICTOR CHAPMAN, OF SCOTT, KANSAS.

PUMP.

Specification of Letters Patent.

Application mea May 15, 1911. serial No. 627,183,

To all whom it may concern: i

Be it known that I, Jol-IN VICTOR CHAP- MAN, a citizen of the UnitedStates, residing at Scott city, in the county of Scottand' State ofKansas, 'have invented certain new and useful Improvements in Pumps; andI do declare the following to be a full, clear,

reducing the friction of the lifted and dis-l charged water to aminimum.

With these and other objectsin view, the*` invention consists of certainno-vel features of construction, and thejcombination `and arrangement ofparts as will be more fully described and claimed.

In the accompanying drawings: Figure 1 is a side elevation of a pumpconstructed in accordance with thisinventionwith parts broken out forconvenience in illustration; Fig. 2 is a longitudinal vertical sectionthrough the bowl and the pipe; Fig. 3 is a horizontal section on line3-3 of Fig. 2;4

Fig. 4 is a horizontal sect-ion on line 4.-4 of Fig. 1.

IIn the embodiment illustrated, a twin pump is shown in which the bowlsor chambers 1 and 2 are arranged between a tubular Y-shaped suctionmember 3 and an inverted Y-shaped discharge member 4, said walls of saidchambers being secured to said members in water-tight relation, beingpreferably provided with laterally extending flanges which rest onsimilar flanges on the arms of the Y-shaped members 3 and 4 and betweenwhich gaskets-as 5 are arranged, the flanges of the members beingsecured together by bolts or other suitable fastening means. A waterdischarge pipe 6- is connected with the free end of the upwardlyprojecting hollow stem of the member 4 in any suitable manner and ispreferably provided atv its upper end with a discharge elbow 7 whichprojects through a plate 8 which is adapted to rest on the ground line.

The arms of the discharge Y 4 are secured l against vibration.

to the chambers land 2-at one side thereof to provide for the offsettingof the discharge pipe 6 for a purpose to be described. A tube 9 of alength corresponding to, or .slightly greater than the length of thepipe 6 is arranged adjacent thereto and is preferably secured to saidpipe 6 by means of suitable bands as 10 which are designed to hold thetube securely in position.

A main .driving shaft 11 extends through the tube 9 and is mounted insuitable bearings as 12 arranged in said tube at suitable distancesapart to ho-ld the shaft securely The lower end of this shaft 11 issecured to a main driving gear 13. This shaft passes through said gearwheel and the lower end thereof rests on a ball bearing 14 which issuitably mounted, being preferably supported by the pump bowls by meansof a steel plate 15 on which said ball bearing is mounted. This ballbearing will assist inY supporting the weight of thel shaft during theoperation thereof.

Mounted within each pump chamber is a propeller 16, the shaft 17 ofwhich extends .through van opening in the upper end of the bowl which isprovided with a suitable stufling gland and a packing for rendering thebearing fluidtight- Each of the propeller shafts yis provided at itsupper end with'a gear wheel 18 arranged to mesh with the main drivinggear 13, said driving gear 13 being ,preferably arranged between thegears on the propeller shafts. The gears on the propeller shafts arepreferably made considerably smaller than the main driving gear rtoprovide for the rapid rot-ation of the propellers with a comparativelyslow rotation of the ymain driving gear.

An oil casing 19 is fitted over the gear wheels 18 and 13 and whenfilled with oil, will prevent sand from coming in contact with the gearwheels and will furnish an oil reservoir for the gear wheels to run in.The pipe or tube 9 is also filled with oil and communicates at its lowerend with the upper end of the oil casing 19 and when so lilled, theshaft 11 will be submerged in oil which prevents heating of the boxesand also prevents the "sand from enteringk and cutting the shafts or itsboxes. The casing is cylindrical in form and has a circular flat top anda circular bottom composed principally of two cones 191 each fittingover the top and down substantially over the upper half of one of thechambers 16. The steel Patented Apr. 16, 1912.

plate 15 before described rests upon the cutaway or open upper ends ofthe cones 191 within the casing 19.

rIhe upper end of the shaft which projects above the top of the well isprovided with a bevel gear wheel 2O which mesheswith a similar wheel 21arranged on a horizontally disposed shaft 22, said wheel 21 beingconsiderably larger in diameter thanv v A roller bearing 23 ispreferably secured to the shaft 11 near the top thereof to assist incarrying the weight of the shaft, which roller bearing, coacting withthe ball bearing at the bottom of the shaft, will greatly reduce thefriction.

By mounting the driving shaft y22 in a horizontal position, it will beobvious that the power from an engine may be transmitted directly to thepump or by the use of a pulley, as may be desired. It is also obviousthat by providing two propellers with a driving wheel arranged betweenthem, the parts of the pump will be balanced at all times, regardless ofthe speed and the division of the water as it enters the pump bowl, onepart being taken by one propeller and the other by the other propeller,greatly lessens the work' on the propellers and the friction on each ofthem.`

By providing an unobstructed discharge pipe also greatly reduces thefriction and economizes the power of operating the pump.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation. Various changes in the form, proportion and the minordetails of construction may be resorted to without departing from theprinciple or sacrificing any of the advan- Y tages of the claimedinvention.

I claim as my invention 1. A- pump comprising separated twin chambersarranged side by side and having a common supply pipe at their lowerends Y and a common discharge pipe at their upper Copies of this patentmay be obtained for 2. A pump comprising separatedvtwin.

chambers arranged side by side, vertical propelling shafts journaled inthe tops of and depending into said chambers and carrying horizontallyarranged blades thereon within the chambers, gear wheels fixed to saidshafts outside of and above said chambers, an oil casing tting upon thetops of both chambers inclosing. said gears and having a ball bearing inthe bottom thereof, a vertical tube extending centrally from the top ofthe casing and opening therein, a driving shaft mounted in said verticaltube, extending into said casing and mounted on said ball bearing, agear on said driving shaft within the casing `meshing with the gears onthe propelling shafts, entrance and discharge pipes for each chamber,and

'means for connecting, bracing, and actuating said drive shaft.

3. Atwin pump comprising a pair of substantially spherical, separatechambers mounted side by side, a Y fitting connecting a suction pipewith the bottom of each chamber, a Y tting connecting each chamber onone side with a discharge pipe, an oil casing having two cones formed inits bottom and tted over the top of the two chambers, a vertical tubeextending upwardly from the top of the casing, a plate mounted in the""casing ontop of the cones, a ball bearing on the plate in line withthe vertical tube, a shaft in the tube depending into the casing andsupported upon the lball bearing, vertical shafts journaled in the plateand the tops of the casing and depending centrally into the chambers,propellers on the shafts in the chambers between their entrance anddischarge openings, and gearing in the casing connecting the threeshafts.

In testimony whereof I have hereunto set ymy hand in presence of twosubscribing witnesses. A

JOHN VICTOR CHAPMAN.

Witnesses:

A. R. LosLEY, C. QI. VAN ANTw'ERr,

five cents each, by addressing the I Commissioner of Patents,Washington, ID. 0.,

